Journal article
More accurate component alignment in navigated total knee arthroplasty has no clinical benefit at 5-year follow-up.
- Hoppe S Department of Orthopaedic Surgery and Traumatology, University of Bern, Inselspital, Bern, Switzerland. sven.hoppe@insel.ch
- Mainzer JD
- Frauchiger L
- Ballmer PM
- Hess R
- Zumstein MA
- 2012-11-13
Published in:
- Acta orthopaedica. - 2012
Aged
Arthroplasty, Replacement, Knee
Bone Malalignment
Female
Follow-Up Studies
Humans
Knee Prosthesis
Male
Middle Aged
Minimally Invasive Surgical Procedures
Monitoring, Intraoperative
Osteoarthritis, Knee
Pain Measurement
Postoperative Care
Prosthesis Design
Prosthesis Failure
Prosthesis Fitting
Range of Motion, Articular
Reference Values
Reoperation
Risk Assessment
Surgery, Computer-Assisted
Time Factors
Tomography, X-Ray Computed
Treatment Outcome
English
BACKGROUND AND PURPOSE
Computer navigation in total knee arthroplasty is somewhat controversial. We have previously shown that femoral component positioning is more accurate with computed navigation than with conventional implantation techniques, but the clinical impact of this is unknown. We now report the 5-year outcome of our previously reported 2-year outcome study.
METHODS
78 of initially 84 patients (80 of 86 knees) were clinically and radiographically reassessed 5 (5.1-5.9) years after conventional, image-based, and image-free total knee arthroplasty. The methodology was identical to that used preoperatively and at 2 years, including the Knee Society score (KSS) and the functional score (FS), and AP and true lateral standard radiographs.
RESULTS
Although a more accurate femoral component positioning in the navigated groups was obtained, clinical outcome, number of reoperations, KSS, FS, and range of motion were similar between the groups.
INTERPRETATION
The increased costs and time for navigated techniques did not translate into better functional and subjective medium-term outcome compared to conventional techniques.
Computer navigation in total knee arthroplasty is somewhat controversial. We have previously shown that femoral component positioning is more accurate with computed navigation than with conventional implantation techniques, but the clinical impact of this is unknown. We now report the 5-year outcome of our previously reported 2-year outcome study.
METHODS
78 of initially 84 patients (80 of 86 knees) were clinically and radiographically reassessed 5 (5.1-5.9) years after conventional, image-based, and image-free total knee arthroplasty. The methodology was identical to that used preoperatively and at 2 years, including the Knee Society score (KSS) and the functional score (FS), and AP and true lateral standard radiographs.
RESULTS
Although a more accurate femoral component positioning in the navigated groups was obtained, clinical outcome, number of reoperations, KSS, FS, and range of motion were similar between the groups.
INTERPRETATION
The increased costs and time for navigated techniques did not translate into better functional and subjective medium-term outcome compared to conventional techniques.
- Language
-
- English
- Open access status
- gold
- Identifiers
-
- DOI 10.3109/17453674.2012.747923
- PMID 23140107
- Persistent URL
- https://sonar.ch/global/documents/138815
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